Well, it is good. Excellent, even. I'm sure you'll love it. But yeah, if, somehow, you don't like it by the time you've completed the arlong arc which gets wrapped up by 40-50 episodes, I don't think you should continue. Watching till that arc will give you a pretty good idea of how One Piece works. So yeah, if you don't like it by then, stop. No need to torture yourself for 500+ more episodes. :p Although I have to say if you like the arc and what you saw before it, you should know that it is only the beginning of how good the show can get. The show doesn't deteriorate in quality after an 'x' amount of episodes, really. There are plenty of epic arcs later on in the show. ;D
But yeah, don't look forward to the OPs too much - they tend to be a lot less impressive compared to FT or even Bleach's. The initial ones aren't all that good, imo. Maybe the OPs after the 10th will be liked by you. 13, 14 and 15 have been pretty amazing. 13 is pretty much the best opening I've ever seen for any anime. Ever. Oh, and One Piece hasn't had that many EDs. I mean, most episodes just end with a "TO BE CONTINUED" thing. :p ALSO there are no powerlevels aka DBZ. Weak people can defeat strong characters if they use strategy. That's another thing I like! ;D
But yeah, don't look forward to the OPs too much - they tend to be a lot less impressive compared to FT or even Bleach's. The initial ones aren't all that good, imo. Maybe the OPs after the 10th will be liked by you. 13, 14 and 15 have been pretty amazing. 13 is pretty much the best opening I've ever seen for any anime. Ever. Oh, and One Piece hasn't had that many EDs. I mean, most episodes just end with a "TO BE CONTINUED" thing. :p ALSO there are no powerlevels aka DBZ. Weak people can defeat strong characters if they use strategy. That's another thing I like! ;D